Features - Daikin UWL-B5 Series Catalogue/Engineering Data

Features

Water system energy-saving control
Control system of UWL-B5 series units can intelligently output the control signals of air conditioning chilled
water pump, cooling water pump and cooling tower, and can control start and stop of the cooling tower based
on the temperature of the cooling water. After compressors of all units deloading, the unit will automatically
shut down the cooling water pump, and can effectively decrease energy consumption of the system during
transitions season or running at low load. The unit has two-way valve interlocking function, when all fan coils
are shut down, the unit will shut down the pumps and cooling tower and then enter standby status.
Low carbon and environment friendly
Cooling and heating function can be realized through different system design schemes with reusable energy
as the heat exchange system, the unit can be more efficient and energy-saving. R410A environmental
friendly refrigerant is adopted without limit on use term, which does not destroy the ozone layer.
Double backup operation makes double improvement of reliability
There are 3 or 4 sets of compressors in every single unit; failure of a single compressor does not affect
operation of theunit; failure of unit module does not affect operation of the combination system. During use
through combination it doesn't need another one master unit for standby, so that the air conditioning system
is safer and more economic in investment. Double backup operation can make double increase in reliability
of the air conditioning system; the air conditioning system may continue to run before maintenance personnel
arrive, which can make maintenance and repair easy in remote areas.
High efficiency shell and tube heat exchanger for condenser and evaporator
Shell and tube heat exchanger with large pipe diameter is adopted for evaporator and condenser, which has
high tolerance on water quality, while the unit has strong ability to resist filth blockage. Internal thread finned
copper tubes are adopted inside the shell and tube heat exchanger, which can increase the effective heat
transfer surface; turbulent flow type water flow process design can delay internal scale and increase thermal
efficiency. Using multiple sets of electronic expansion valve for precision throttling can make precise dynamic
throttling when water temperature condition changes,and it can stably control target superheat of the unit, so
as to keep safe and efficient operation of the unit.
Double balance operation extends service life of the overall unit
Compressors in single unit have balance operation time function; and the operation time among modules can
be balanced during multiple module combination; double balance operation design can reduce the rate of
failure, which can extend the service life of the overall unit.
Self-protection and self-diagnosis function
The unit has water over-temperature protection, low water flow protection, protection for compressor frequent
start-stop, refrigerant high/low pressure protection, etc.; when the water temperature is too low in winter, the
unit enter anti-freezing operation protection automatic by starting up water pump. When failure occurs, self-
diagnosis function can rapidly and accurately show the cause of the problem; acousto-optic code display can
assist rapid troubleshooting.
Compact and flexible air conditioning solution
The compact modular body can be moved via good elevator without large hoisting equipment, so that it can
be easily moved into the existing water cooling machine room, and can enter the basement for replacement
of old machine without dismantling the existing construction during reform of some old projects.
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